fpga: Add X440/FBX support

Co-authored-by: Martin Braun <martin.braun@ettus.com>
Co-authored-by: Wade Fife <wade.fife@ni.com>
Co-authored-by: Ryan Marlow <ryan@lmarlow.com>


Original-commit: 596760a12e4834e47589c12f8a4fd083aa2f7c25

top/x400/rf/sim/Makefile

@@ -80,6 +80,7 @@ $(abspath tb_ddc_400m_saturate.vhd        ) \
 $(abspath tb_duc_400m_saturate.vhd        ) \
 $(abspath tb_rf_nco_reset.vhd             ) \
 $(abspath tb_x410_rf_reset_controller.vhd ) \
+$(abspath tb_adc_iq_repacker.sv           ) \
 $(abspath rf_all_tb.sv                    ) \
 
 #-------------------------------------------------